okay so this is my first time posting anything here so forgive me if i've done something wrong (and do let me know). but i've been struggling with this problem now for a couple days and it seems like the answer is on the tip of my tongue but i can't come up with the steps. so if anyone could give me a clue, that would be great. here goes: Two spherical objects have a combined mass of 150kg. The gravitational attraction between them is 8.00X10^-6 N when their centers are 20 cm apart. What is the mass of each? I'm sure i'm missing something really simple so any help is appreciated. thanks.